[CLIENT] Mastery Page Teambuilder Bug

I think I've discovered a bug where first you go into team builder, pick a champ and a role and then, while having team builder on, look on someones profile and go to their masteries and then click one and hit the home button to go back to team builder and then search for a team. Then, once in a team, you open up the masteries you're using in team builder and all your masteries have the same names as the person who's profile you previously looked on, and you can't X out of the masteries and the only fix I've discovered is to exit out of the client and restart.

1. Pick a champion and role.
2. Open up a users profile and enter their mastery page on your friends list.
3. Hit the house button to go back to the team builder screen.
4. Notice that the mastery page your using now has the name of your friends mastery page.
5. Click on the button to the right of your mastery to open up your masteries.
6. You will now be unable or barely able to exit the mastery page.

I have managed to recreate this bug 7 different times.

I'm using a MacBook Pro and was playing Sion and chose Jungle Tank if that helps.

Edit 1: You can also already be in a Teambuilder group already and recreate this bug.

Edit 2: Your mastery names changing is also a bug.